THIS INVESTIGATION WILL DEMONSTRATE AN ULTRA-BROADBAND WIDELY TUNABLE LOW SIZE WEIGHT AND POWER (SWAP) MICROWAVE PHOTONIC INTEGRATED CIRCUIT (PIC) FOR EXTREME HIGH FREQUENCY (EHF) SIGNAL GENERATION AND DISTRIBUTION. EXPLOITING MICROWAVE PHOTONIC TECHNOLOGIES THE PICS TO BE REALIZED WILL BE ABLE TO OPERATE FREQUENCY CONVERSION/SIGNAL GENERATION AND TRUE TIME DELAY OF ULTRA-BROADBAND SIGNALS WITH CARRIER FREQUENCY TUNABLE OVER A WIDE PORTION OF THE EHF BAND. THE EXTREME IMPROVEMENT IN TERMS SWAP AND SIGNAL PURITY ENABLED BY MICROWAVE PHOTONIC TECHNOLOGIES MAKES THE PROPOSED SOLUTION ATTRACTIVE EITHER FOR SPACEBORNE COMMUNICATION NAVIGATION AND REMOTE SENSING SYSTEMS. SPECIFICALLY WE WILL TARGET PIC DEVELOPMENT FOR SIGNAL FREQUENCY CONVERSION/SIGNAL GENERATION AND TRUE TIME DELAY ENABLING BROADBAND SQUINT-FREE BEAM FORMING FOR LARGE ARRAY ANTENNAS. THIS TECHNOLOGY CAN READILY SCALE TO SAY THE MILLIMETER WAVE (MMW) REGIME AND BEYOND AND WILL ENABLE EFFICIENT POINT-TO-POINT COMMUNICATION. THE RESEARCH WILL BE CONDUCTED BY THE INTEGRATED PHOTONICS GROUP (IPG) FROM THE UNIVERSITY OF CALIFORNIA SANTA BARBARA (UCSB). THIS GROUP IS A LEADER IN PHOTONIC INTEGRATION AND ITS APPLICATION TO MICROWAVE PHOTONICS PIONEERING PICS BASED ON A NUMBER OF MATERIALS PLATFORMS WORKING EXTENSIVELY WITH PHOTONICS FOUNDRIES ACROSS THE GLOBE AND MAINTAINING A HOST OF IN-HOUSE NANOFABRICATION CAPABILITIES. UCSB IS ALSO THE WEST COAST HUB OF THE AMERICAN INSTITUTE FOR MANUFACTURING INTEGRATED PHOTONICS (AIM PHOTONICS) A FEDERALLY FUNDED INSTITUTE FOR MANUFACTURING INNOVATION. THE UCSB IPG IS CURRENTLY WORKING ON TWO NASA GRANTS: THE EARLY CAREER FACULTY SPACE TECHNOLOGY RESEARCH GRANT IN LOW SWAP LASERS FOR DEEP SPACE COMMUNICATIONS AND THE EARLY STAGE INNOVATIONS AWARD IN PHOTONIC INTEGRATED CIRCUITS FOR LOW-EARTH ORBIT SPACE OPTICAL COMMUNICATIONS. HERE WE PROPOSE TO REALIZE A FULLY-FUNCTIONAL PIC ENABLING WIDELY TUNABLE EHF SIGNAL GENERATION AND STEERING FOR FLEXIBLE AND MULTIPURPOSE TRANSCEIVERS FOR COMMUNICATIONS REMOTE SENSING AND NAVIGATION. THE SPECIFIC FOCUS OF THIS WORK WILL THEREFORE BE TO REALIZE AN ON CHIP FULLY FUNCTIONAL SYSTEM USING PHOTONIC INTEGRATION TECHNOLOGY. THESE PICS WILL INCLUDE COMPONENTS SUCH AS OPTICAL SOURCES MODULATORS AND PHOTODETECTORS WITH PHASE NOISE AND BANDWIDTH OPTIMIZED FOR THE HIGH REQUIREMENTS REQUESTED BY REMOTE SENSING AND NAVIGATION IN THE EHF FREQUENCY RANGE. THE PICS WILL ALSO INCLUDE OPTICAL RING RESONATOR BASED TRUE TIME DELAY ELEMENTS FOR THE SIGNAL DISTRIBUTION TO ENABLE BEAM STEERING. THE TECHNOLOGY TO BE DEVELOPED IN THIS WORK AND CAN BE EASILY TRANSFERRED TO OTHER FREQUENCY RANGES ENABLING MULTIFUNCTION SYSTEMS. THE PROPOSED TECHNOLOGY WILL: 1) SIGNIFICANTLY LOWER THE COST AND SWAP OF THE EHF TRANSCEIVER; 2) INCREASE SPECTRAL PURITY OF THE GENERATED SIGNALS; 3) INCREASE SYSTEM FLEXIBILITY ENABLING MULTIPLE FUNCTIONALITIES (EX. COMMUNICATION SENSING) FROM A SINGLE TRANSCEIVER.